Photo sensitizing and electrochemical performance analysis of mixed natural dye and nanostructured ZnO based DSSC

Sinha, Debabrata; De, Debasis; Ayaz, A.

doi:10.1007/s12046-020-01415-0

Cited by 15 publications

(7 citation statements)

References 46 publications

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“…The photon to electrical power conversion efficiencies of purple cabbage, spinach, turmeric, and their mixed dyes are explored as 0.1015%, 0.1312%, 0.3045%, and 0.602%, respectively, under the same simulated light condition. The mixed dye reveals the stable performance of the cell with the highest conversion efficiency due to the absorption of an extensive range of the solar spectrum and well-suited electrochemical responses due to the fast electron transportation and lower recombination loss with longer electron lifetime found on mixed dyes [86].…”

Section: Natural Plant Pigment Photosensitizers In Dsscsmentioning

confidence: 99%

Recent Progress, Advancements, and Efficiency Improvement Techniques of Natural Plant Pigment‐Based Photosensitizers for Dye‐Sensitized Solar Cells

Bekele

Dessie

2022

Journal of Nanomaterials

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Production of green energy by using environment friendly and cost-effective components is attracting the attention of the research world and is found to be a promising approach to replace nonrenewable energy sources. Among the green energy sources, dye-sensitized solar cells (DSSCs) are found to be the most alternative way to reduce the energy demand crises in current situation. The efficiency of DSSCs is dependent on numerous factors such as the solvent used for dye extraction, anode and cathode electrodes, and the thickness of the film, electrolyte, dye, and nature of FTO/ITO glasses. The efficiency of synthetic dye-based DSSCs is enhanced as compared to their counterparts. However, it has been found that many of the synthetic sensitizers used in DSSCs are toxic, and some of them are found to cause carcinogenicity in nature by forming a complex agent. Instead, using various parts of green plants such as leaves, roots, steam, peel waste, flowers, various spices, and mixtures of them would be a highly environmentally friendly and good efficient. The present review focuses on and summarizes the efficiency affecting factors, the various categories of natural sensitizers, and solvent effects. Furthermore, the review work assesses the experimentally and computationally obtained values and their progress in development.

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Section: Natural Plant Pigment Photosensitizers In Dsscsmentioning

confidence: 99%

Recent Progress, Advancements, and Efficiency Improvement Techniques of Natural Plant Pigment‐Based Photosensitizers for Dye‐Sensitized Solar Cells

Bekele

Dessie

2022

Journal of Nanomaterials

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“…Dari hasil voltamogram yang diperoleh kemudian dianalisis untuk menentukan energi HOMO dan LUMO pada pewarna (dye). HOMO dianggap sebagai proses oksidasi dan LUMO dianggap sebagai proses reduksi [33]. Dalam karakterisasi elektrokimia, penting untuk melihat energi HOMO dan LUMO karena dapat menentukan energi celah pita (bandgap) pewarna.…”

Section: Analisis Elektrokimia Ekstrak Daun Salamunclassified

Karakterisasi Elektrokimia Ekstrak Klorofil dari Daun Salam (Syzgium polyanthum) pada pH Basa sebagai Sensitizer pada Dye Sensitized Solar Cell (DSSC)

Wahyuni

Setiarso

2022

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Chlorophyll is a plant pigment that has the potential to be used as a dye (sensitizer) in DSSC. The performance of DSSC is highly dependent on the wide bandgap of the dye used. This study aims to determine the optimum pH of bay leaf extract in an alkaline condition through an electrochemical analysis. Bay leaves (Syzgium polyanthum) were extracted by maceration method using 96% ethanol solvent with a pH variation from 8 to 13. Bay leaf extract was characterized using UV-Visible spectrophotometry to determine the wavelength absorption. The results showed that the bay leaf extract contains chlorophyll compounds which has absorption wavelengths of 664 nm and 410 nm for chlorophyll-a as well as at the wavelengths 613,5 nm and 466,5 nm for chlorophyll-b. In electrochemical characterization, the optimum pH of bay leaf extract was at pH 13 with a bandgap value is 0,60105 eV.Keywords: Bay leaf, DSSC, electrochemical, chlorophyllKlorofil merupakan pigmen tumbuhan yang berpotensi untuk dimanfaatkan sebagai zat warna (sensitizer) pada DSSC. Kinerja DSSC sangat dipengaruhi oleh sensitifitas lebar bandgap zat warna yang digunakan. Penelitian ini bertujuan untuk menentukan pH optimum ekstrak daun salam dalam kondisi basa secara elektrokimia. Daun salam (Syzgium polyanthum) diekstraksi dengan metode maserasi menggunakan pelarut etanol 96% dengan variasi pH 8 hingga 13. Ekstrak daun salam dikarakterisasi menggunakan spektrofotometri UV-Visible untuk mengetahui serapan panjang gelombang. Hasil penelitian menunjukkan bahwa ekstrak daun salam mengandung senyawa klorofil yang memiliki serapan panjang gelombang 664 nm dan 410 nm untuk klorofil-a serta pada panjang gelombang 613,5 nm dan 466,5 nm untuk klorofil-b. Pada karakterisasi elektrokimia, pH optimum ekstrak daun salam yaitu pada pH 13 dengan nilai bandgap sebesar 0,60105 eV. Kata kunci : Daun salam, DSSC, elektrokimia, klorofil

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“…The use of a combination of dyes as possible sensitizers is another point of research. For example, paper [35] mixed dyes based on purple cabbage, spinach leaf, and turmeric stem. Then, they were studied separately; at the same time, a mixed dye based on purple cabbage, spinach leaf, turmeric stem was examined.…”

Section: Natural Dyes In Dsscs Reviewmentioning

confidence: 99%

Advances on Dye-Sensitized Solar Cells (DSSCs) Nanostructures and Natural Colorants: A Review

Castillo-Robles¹,

Rocha–Rangel²,

Ramírez-de-León

et al. 2021

J. Compos. Sci.

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Human beings are attempting to take advantage of renewable natural resources by using solar cells. These devices take the sun’s radiation and convert it into electrical energy. The issue with traditional silicon-based solar cells is their manufacturing costs and environmental problems. For this reason, alternatives have been developed within the solar cell field. One of these alternatives is the dye-sensitized solar cell (DSSC), also known as Grätzel solar cells. DSSCs are a type of solar cell that mimics photosynthesis. They have a photoanode, which is formed by a semiconductor film sensitized with a dye. Some of their advantages include low-cost manufacturing, eco-friendly materials use, and suitability for most environments. This review discusses four important aspects, with two related to the dye, which can be natural or synthetic. Herein, only natural dyes and their extraction methods were selected. On the other hand, this paper discusses the nanostructures used for DSSCs, the TiO2 nanostructure being the most reported; it recently reached an efficiency level of 10.3%. Finally, a review on the novelties in DSSCs technology is presented, where it is observed that the use of Catrin protein (cow brain) shows 1.45% of efficiency, which is significantly lower if compared to Ag nanoparticles doped with graphene that report 9.9% efficiency.

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Photo sensitizing and electrochemical performance analysis of mixed natural dye and nanostructured ZnO based DSSC

Cited by 15 publications

References 46 publications

Recent Progress, Advancements, and Efficiency Improvement Techniques of Natural Plant Pigment‐Based Photosensitizers for Dye‐Sensitized Solar Cells

Recent Progress, Advancements, and Efficiency Improvement Techniques of Natural Plant Pigment‐Based Photosensitizers for Dye‐Sensitized Solar Cells

Karakterisasi Elektrokimia Ekstrak Klorofil dari Daun Salam (Syzgium polyanthum) pada pH Basa sebagai Sensitizer pada Dye Sensitized Solar Cell (DSSC)

Advances on Dye-Sensitized Solar Cells (DSSCs) Nanostructures and Natural Colorants: A Review

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